Digitization of a selection of oil and gas well pad sites in the Piceance region of Western Colorado. A random sample of 146 pad locations from the "Digitized Piceance Oil and Gas Pads of Western Colorado, 2015" were used to identify the locations digitized in this dataset. The 146 polygons spatially intersect polygons in the 2015 shape file, but are not completely contained within the 2015 polygons. Well pad sites were delineated using a modified version of the Rapid Land Cover Mapping protocol (Preston and Kim, 2016). The base imagery used to delineate boundaries is the 2005 National Agriculture Imagery Program (NAIP) imagery.

The purpose of this dataset is to capture a selection of well pad areas in 2005 based on a random sample of locations from the 2015 dataset for comparative purposes. The digitized pads provide a limited snapshot in time of the footprint for selection of oil and gas development pad sites in the Piceance region of Western Colorado.

Colorado, Delta County, Garfield County, Gunnison County, Mesa County, Moffat County, Pitkin County, Rio Blanco County

Data Quality Information

Logical Consistency Report:

No formal logical accuracy tests were conducted

Completeness Report:

Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.

Positional Accuracy

Horizontal Positional Accuracy Report:

No formal positional accuracy tests were conducted

Vertical Positional Accuracy Report:

No formal positional accuracy tests were conducted

Processing Steps

Step 1 Process Description:

A modified version of the Rapid Land Cover Mapping protocol described in Preston and Kim (2016) is used. A dot point grid with 5m spacing is generated covering the area of interest. The grid is masked to a radius of 250m around the center coordinate locations of well pads identified in 2015 NAIP imagery. The masked dot point grid is overlaid on NAIP imagery and the analyst selects all points that overlap the visual well pad. Selected points are aggregated to approximate the polygonal shape of the well pad.

Step 1 Process Date:

2016

Spatial Reference Information

Geodetic Model

Horizontal Datum Name:

North American Datum Of 1983

Ellipsoid Name:

Geodetic Reference System 1980

Semi-major Axis:

6378137.0

Denominator of Flattening Ratio:

298.257222101

Distribution Information

Distribution Liability:

Although these data have been processed successfully on a computer system at the U.S.
Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein.